Optical films having an optical axis and systems and methods for processing same
First Claim
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1. A method comprising:
- providing a continuous web of optical film, the optical film having a length along a longitudinal direction and a width along a transverse direction, the optical film having an optical axis, an orientation of the optical axis varying across the width of the optical film;
for each of at least one position along the length of the optical film, determining the orientation of the optical axis at a plurality of positions along the width of the optical film; and
applying at least one indicium to a surface of the optical film, the at least one indicium recording the orientation of the optical axis at the plurality of positions along the width of the optical film.
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Abstract
Optical films having an optical axis with an orientation that varies along a width of the optical film and having one or more indicia recording the orientation of the optical axis at a plurality of locations in the optical film are provided. Systems and methods for producing and for converting the optical films are provided.
25 Citations
20 Claims
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1. A method comprising:
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providing a continuous web of optical film, the optical film having a length along a longitudinal direction and a width along a transverse direction, the optical film having an optical axis, an orientation of the optical axis varying across the width of the optical film; for each of at least one position along the length of the optical film, determining the orientation of the optical axis at a plurality of positions along the width of the optical film; and applying at least one indicium to a surface of the optical film, the at least one indicium recording the orientation of the optical axis at the plurality of positions along the width of the optical film. - View Dependent Claims (2, 3, 4, 5)
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6. A method comprising:
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providing a continuous web of optical film, the optical film having a length along a longitudinal direction and a width along a transverse direction, the optical film having an optical axis, an orientation of the optical axis varying across the width of the optical film, the optical film having at least one indicium, the at least one indicium recording the orientation of the optical axis at a plurality of locations in the optical film; reading an indicium in the at least one indicium and determining therefrom the orientation of the optical axis at one or more locations in the plurality of locations in the optical film; and generating a map of a plurality of regions of the optical film to be cut out for incorporation into a product such that an orientation of each region is aligned with the orientation of the optical axis in the region. - View Dependent Claims (7, 8, 9)
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- 10. An optical film having a length along a longitudinal direction and a width along a transverse direction, the optical film having an optical axis, the optical axis having an orientation that varies across the width of the optical film, wherein the optical film includes one or more indicia, the one or more indicia recording the orientation of the optical axis at a plurality of locations in the optical film.
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13. A system comprising:
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a receiving device configured to receive a continuous web of optical film, a measurement device configured to measure an optical axis of the optical film received by the receiving device at a plurality of positions along a transverse direction, a data processing device configured to receive optical axis data from the measurement device and to encode the optical axis data; and a recording device configured to receive the encoded optical axis data from the data processing device and label the optical film with the encoded optical axis data. - View Dependent Claims (14, 15)
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16. A system comprising:
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a receiving device configured to receive a continuous web of optical film, a reading device configured to read indicia on the optical film received from the receiving device; and a processing device configured to receive data from the reading device and to determine therefrom an orientation of an optical axis of the optical film at a plurality of locations in the optical film, the processing device further configured to generate a map of a plurality of regions of the optical film such that an orientation of each region is aligned with the orientation of the optical axis in the region.
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Specification